<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="../5.19/vue.js"></script>
</head>
<body>
    <div id="app">
        <input type="text" v-on:keyup.enter="add"/>
    </div>
</body>
<script>
    var vm=new Vue({
        el:'#app',
        methods:{
            add(){
                console.log("提交文本框内容");
            }
        }
    })
</script>
</html>